<!DOCTYPE html>
<html lang="en" xmlns:font-size="http://www.w3.org/1999/xhtml" xmlns:font="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
</head>
<body>
<div style="font-size:60px; color: #990000;"> this is  a content</div>

</body>
</html>